Mercurial > molko
diff src/libmlk-rpg/rpg/battle-entity-state-blinking.c @ 320:8f9937403749
misc: improve loading of data
author | David Demelier <markand@malikania.fr> |
---|---|
date | Fri, 01 Oct 2021 20:30:00 +0200 |
parents | libmlk-rpg/rpg/battle-entity-state-blinking.c@d01e83210ca2 |
children | 460c78706989 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/libmlk-rpg/rpg/battle-entity-state-blinking.c Fri Oct 01 20:30:00 2021 +0200 @@ -0,0 +1,86 @@ +/* + * battle-entity-state-blinking.c -- the entity is blinking + * + * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <assert.h> +#include <stdlib.h> + +#include <core/alloc.h> +#include <core/panic.h> +#include <core/sprite.h> +#include <core/texture.h> + +#include "battle-entity.h" +#include "battle-entity-state.h" +#include "character.h" + +#define TRANSPARENT (150) +#define OPAQUE (255) + +struct blink { + struct battle_entity_state state; + struct texture *tex; + unsigned int elapsed; + unsigned int count; +}; + +static int +update(struct battle_entity_state *st, struct battle_entity *et, unsigned int ticks) +{ + (void)et; + + struct blink *blk = st->data; + + blk->elapsed += ticks; + + if (blk->elapsed >= 80) { + blk->count += 1; + blk->elapsed = 0; + } + + texture_set_alpha_mod(blk->tex, blk->count % 2 == 0 ? TRANSPARENT : OPAQUE); + + return blk->count >= 3; +} + +static void +finish(struct battle_entity_state *st, struct battle_entity *et) +{ + (void)et; + + free(st->data); +} + +void +battle_entity_state_blinking(struct battle_entity *et) +{ + assert(et); + + struct blink *blk; + + if (!(blk = alloc_new0(sizeof (*blk)))) + panic(); + + blk->tex = et->ch->sprites[CHARACTER_SPRITE_NORMAL]->texture; + texture_set_alpha_mod(blk->tex, TRANSPARENT); + + blk->state.data = blk; + blk->state.update = update; + blk->state.finish = finish; + + battle_entity_switch(et, &blk->state); +}